<!doctype html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>example XHTML page</title>
</head>
<body style="background:#f5f5f5;">
  <s:svg xmlns:s="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 100 100" style="width:100px;height:100px;border:1px solid #fff;">
    <s:rect x="0" y="0" width="50px" height="50px" style="fill:#f0f0f0"/>
  </s:svg>
</body>
</html>